JP2001350157A - Display device and portable terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such problem that a liquid crystal display part is usually used only for displaying information on date and time and the like and is not used effectively when it is in waiting in a conventional portable terminal equipment having the liquid crystal display part. SOLUTION: The liquid crystal display device is constituted of a transmission type liquid crystal panel, a scattering type liquid crystal panel and a mirror and the liquid crystal display device is used as the liquid crystal display part of the portable terminal equipment. The two kinds of liquid crystal panels are controlled so that only either one of them is in a ON state. When the power of the portable terminal is turned on, the transmission type liquid crystal panel is in a ON state and conventional information display is performed in the liquid crystal display part. When the power is turned off, the scattering type liquid crystal panel is in a OFF state and the liquid crystal display part functions as the mirror (a compact mirror).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone having a liquid crystal display and a portable radio terminal (hereinafter, referred to as a portable terminal).

[0002]

2. Description of the Related Art FIG. 10 shows a circuit configuration of a portable terminal having a conventional liquid crystal display device. An antenna (5) for transmitting and receiving radio waves is provided. At the time of reception, the RF signal received from the antenna (5) is transmitted to the duplexer (10
Input to 1). The duplexer (101) switches between transmission and reception. At the time of reception, the received signal is transmitted to the low noise amplifier (102). The received signal is amplified by the low noise amplifier (102), and the frequency is reduced by the down converter (103).
The received signal whose frequency has been reduced is transmitted to the baseband controller (104). The received signal thus processed is further transmitted to a baseband controller (104).
, And is output from the speaker (2) as audio. In addition, character information such as e-mail, other management information in the portable terminal, an operation screen, and the like are displayed on the liquid crystal display unit (1). On the other hand, at the time of transmission, when a call operation is performed by, for example, inputting a telephone number or the like on the operation unit (4), a call processing operation is performed by the baseband controller (104). After the start of the call, the audio signal input from the microphone (3) is converted into a transmission signal by the baseband controller (104). This transmission signal is raised in frequency by an up-converter (105) and converted into an RF signal.
This RF signal is amplified by the power amplifier (106) and transmitted to the duplexer (101). Duplexer (10
In 1), at the time of transmission, the RF signal is transmitted to an antenna (5) for transmission.

A mobile phone having such a circuit configuration has, for example, an external shape as shown in FIG. 11, and includes a liquid crystal display (1), a speaker (2), an antenna (5), and a microphone (3). ), An operation unit (4) and a power switch (6). As shown in FIG. 11, during normal standby, the date and time are displayed on the liquid crystal display unit (1).

The liquid crystal display section (1) is driven and controlled by a liquid crystal drive section (32) as shown in FIG. 12, and the display is switched on and off by a liquid crystal power switch (33). ing. The liquid crystal power switch (33) is usually configured as software, and can be turned on / off on a menu screen of the portable terminal. However, this liquid crystal power switch (3
It is also possible to provide 3) on the operation unit (4) with a hardware button.

[0005]

As shown in FIG.
The liquid crystal display (1) normally displays the date and time during standby. However, when there is no need to display the date and time when holding a wristwatch or the like, the display is turned off for reasons such as reducing power consumption during standby. Sometimes. In such a case, the LCD display unit (1) cannot be used for any purpose,
It is wasted space.

The present invention aims at making effective use of the liquid crystal display (1), which is a wasteful space, to reduce the size of the liquid crystal display (1) when the liquid crystal display (1) is turned off. It is used as a mirror.
At present, a compact mirror is completely different from a portable terminal, and must be carried with each.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and comprises a transmission type liquid crystal panel, a scattering type liquid crystal panel and a mirror, and only one of the above liquid crystal panels is provided. When the transmission type liquid crystal panel section is energized by controlling so as to energize, information is displayed by reflecting light from the outside on the surface of the scattering type liquid crystal panel, and the scattering type liquid crystal panel section is displayed. This is a display device that can be used as a mirror when light from the outside passes through both liquid crystal panels and reaches the mirror when electricity is supplied.

Also, the transmission type liquid crystal panel is constituted by a transmission type liquid crystal panel, a scattering type liquid crystal panel and a mirror, and is controlled so that only one of the above liquid crystal panels is energized. In this case, information is displayed by reflecting light from the outside on the surface of the scattering type liquid crystal panel.If the scattering type liquid crystal panel is energized, light from the outside passes through both liquid crystal panels. A portable terminal having a display device that can be used as a mirror by reaching a mirror.

The display device further comprises a power switch. When the power switch is turned on, the transmission type liquid crystal panel portion is energized and the scattering type liquid crystal panel portion is electrically disconnected at the same time. The portable terminal is capable of displaying information.

On the other hand, a power switch is provided, and when the power switch is turned off, the transmission type liquid crystal panel is electrically disconnected, and at the same time, the scattering type liquid crystal panel is energized. The portable terminal device can be used as a mirror.

And a power switch. When the power switch is turned on, the transmission type liquid crystal panel is energized and the scattering type liquid crystal panel is electrically disconnected at the same time. Information can be displayed,
On the other hand, when the power switch is off, the transmission type liquid crystal panel is electrically disconnected, and the scattering type liquid crystal panel is simultaneously energized, so that the display device can be used as a mirror. .

On the other hand, a display mode changeover switch is provided,
The display mode changeover switch switches between a first display mode in which the display device displays information and a second display mode in which the display device functions as a mirror. In the first display mode, the transmission type liquid crystal panel is energized. And the scattering type liquid crystal panel is electrically cut off, and in the second display mode, the scattering type liquid crystal panel is energized and the transmission type liquid crystal panel is cut off electrically. It is.

[0013] Further, the portable terminal is characterized in that it has a case portion capable of storing cosmetics, and the case portion is attached to a housing so as to be slidable or openable and closable.

[0014] Further, there is provided a case part for accommodating cosmetics, and the case part is attached to a housing so as to be slidable or openable and closable, and is provided on the case part and / or the housing. A sensor for detecting opening and closing and taking out of the case portion; when the sensor detects that the case portion has been opened or pulled out, the display mode changeover switch operates to set the display mode to the second display mode; The portable terminal device as described above.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 2 shows a liquid crystal display device (1) according to a first embodiment of the present invention. The liquid crystal display device (1) includes a transmission type liquid crystal panel unit (21) (for example, TN type: Twisted Nemati).
c), a scattering type liquid crystal panel (22) and a mirror (23) coated with mercury foil. The scattering type liquid crystal panel portion transmits light when electricity is supplied and reflects light when the electricity is cut off. For example, a PDLC type (Polymer Display Cr)
ystal). Each liquid crystal panel section (21) (22)
Two polarizing plates (24) (25) or (26) (27)
The liquid crystal (28) or (29) is sandwiched between them. The transmission type liquid crystal panel unit (21) and the scattering type liquid crystal panel unit (22) are provided with a transmission type liquid crystal switch (30) and a scattering type liquid crystal switch (31), respectively.

When the liquid crystal display device (1) is turned on, as shown in FIG. 2 (B), the transmission type liquid crystal switch (30) is turned on, the scattering type liquid crystal switch (31) is turned off, and the light enters from the outside. After the light passes through the transmissive liquid crystal panel (21), it is reflected on the surface of the scattering liquid crystal panel (22). Therefore, light does not reach the innermost mirror (23), and information such as characters can be displayed.

On the other hand, when the liquid crystal display device (1) is turned off, as shown in FIG.
0) is turned off, and the scattering type liquid crystal switch (31) is turned on. Light incident from the outside passes through the transmissive liquid crystal unit (21), and further passes through the scattering liquid crystal unit (22), and reaches the innermost mirror (23). The light reflected by the mirror returns to the surface of the liquid crystal display device (1) by transmitting through the liquid crystal panel portions (21) and (22). Thus, the liquid crystal display device (1) can be used as a mirror like a compact mirror.

Next, as a second embodiment, FIG. 1 shows a portable terminal using the liquid crystal display device (1) of the first embodiment. This portable terminal comprises a liquid crystal display (1), a speaker (2), a microphone (3), an operation unit (4), an antenna (5), and a power switch (6). The circuit configuration is the same as the conventional one as shown in FIG.

The portable terminal is connected to a base station of a mobile communication carrier by radio, and connected to another portable telephone or a general telephone connected to a subscriber's telephone line to perform a call or exchange data. It is.

When the power of the portable terminal is turned off, the transmissive liquid crystal panel (21) is turned off and the scattering liquid crystal panel (22) is turned on. Can be used as Also, when the power of the portable terminal is turned on, general operations (such as sending and receiving calls) are possible, the transmissive liquid crystal panel (21) is turned on, the scattering liquid crystal panel (22) is turned off, and the character And the like, and operates as a display function of a normal portable terminal.

More specifically, as shown in FIG. 3, a transmission type liquid crystal panel section (21) and a scattering type liquid crystal panel section (22).
Is turned on / off by a switch (33), and is driven by a liquid crystal drive section (32). Mirrors (23) are arranged on the backs of both LCD units in the same manner as described above.

As described above, the transmission type liquid crystal switch (3
When 0) is off, the scattering type liquid crystal switch is turned on,
When the transmission type liquid crystal switch (30) is on, the scattering type liquid crystal switch is off. Therefore, the liquid crystal switch (33)
Performs an operation of switching on the transmission type liquid crystal panel unit (21) and the scattering type liquid crystal panel unit (22) to turn on. When the power switch (6) is turned on, the liquid crystal switch (33)
The transmission type liquid crystal panel (21) is switched to be turned on, and when the power switch is turned off, the scattering type liquid crystal panel (22) is switched to be turned on.

FIG. 4 is a flowchart showing this point. If the power is turned on in step 41, initial processing (port setting, etc.) of the portable terminal is performed in step 42, and then, in step 43, the transmission type liquid crystal panel (21) is turned on, and the scattering type liquid crystal panel is turned on. (2
2) Turn off. In step 44, the conventional standby state is set, and the date and time are displayed on the liquid crystal display unit (1). Then, in step 45, the mobile terminal performs operations such as calling and receiving. Thereafter, when the power is turned off (step 46), at step 47, the transmissive liquid crystal panel (2
1) is turned off and the scattering type liquid crystal panel section (22) is turned on, so that the liquid crystal display section (1) can be used as a compact mirror.

FIG. 5 shows a portable terminal according to a third embodiment. The liquid crystal display device (1) according to the first embodiment.
And a liquid crystal display unit (1), a speaker (2), a microphone (3), an operation unit (4), an antenna (5), a power switch (6), and a display mode changeover switch (33). . The circuit configuration is the same as the conventional one as shown in FIG.

The display mode changeover switch (33) allows the liquid crystal display (1) to display information such as characters, characters and images, and the second display in which the liquid crystal display (1) functions as a mirror. Mode. Therefore, as shown in FIG. 11, normally, when the power is turned on,
Is in the first display mode for displaying the standby screen, but when the liquid crystal display section (1) is to be used as a mirror, it can be switched to the second display mode by the display mode switch (33).

More specifically, in the second display mode, the transmission type liquid crystal panel (21) is turned off and the scattering type liquid crystal panel (22) is turned on. Can be used as a compact mirror. In the first display mode, general operations (such as sending and receiving calls) are possible, the transmission liquid crystal panel (21) is turned on, the scattering liquid crystal panel (22) is turned off, and characters and the like are displayed as described above. It can be displayed and operates as a display function of an ordinary portable terminal.

More specifically, as shown in FIG. 3, a transmission type liquid crystal panel (21) and a scattering type liquid crystal panel (22).
Is turned on / off by a display mode changeover switch (33), and is driven by a liquid crystal drive section (32). A mirror (2) is placed on the back of both LCDs in the same manner as above.
3) is arranged.

As described above, the transmission type liquid crystal switch (3
When 0) is off, the scattering type liquid crystal switch is turned on,
When the transmission type liquid crystal switch (30) is on, the scattering type liquid crystal switch is off. Therefore, the display mode changeover switch (33) performs an operation of switching on the transmission type liquid crystal panel section (21) and the scattering type liquid crystal panel section (22).

FIG. 6 is a flowchart showing this point. If the power is turned on in step 61, initial processing (port setting, etc.) of the portable terminal is performed in step 62, and then, in step 63, the display mode is set to the first display mode, and the transmissive liquid crystal panel (21) is set. Is turned on, and the scattering type liquid crystal panel (22) is turned off. In step 64, the conventional standby state is set, and the date and time are displayed on the liquid crystal display unit (1). Then, step 6
When the display mode changeover switch is operated to designate the second display mode in step 5, the second display mode is set in step 66, and the transmissive liquid crystal panel unit (21) is turned off.
The scattering type liquid crystal panel (22) is turned on, and the liquid crystal display (1) can be used as a compact mirror.

At this time, the display mode switch (3)
When the operation of 3) is performed during a call, only the liquid crystal display is switched to the second display mode while the call is in a call state.

Next, a portable terminal equipped with a makeup pallet according to a fourth embodiment is shown in FIG. A liquid crystal display (1), a speaker (2), a microphone (3), an operation unit (4), an antenna (5), a power switch (6), and an operation unit (4)
A makeup pallet (71) capable of storing cosmetics such as a foundation is provided on the back surface of the pallet, and the makeup pallet (71) can be pulled out by a slide method or the like. Therefore, the drawn-out cosmetic pallet (71) and the compact mirror can be used at the same time.

At this time, if the operation of (33) or the pull-out of the makeup pallet (71) is performed during a call, only the liquid crystal display is switched to the second display mode while the call is in a call state.

FIG. 8 shows a portable terminal with a makeup pallet according to a fifth embodiment. The liquid crystal display unit (1), the speaker (2), the microphone (3), the operation unit (4), the antenna (5), the power switch (6), the display mode changeover switch (33), and the operation unit (4) A makeup pallet (71) capable of storing cosmetics such as a foundation is provided on the back surface of the pallet, and the makeup pallet (71) can be pulled out by a slide method or the like. Therefore, the drawn-out cosmetic pallet (71) and the compact mirror can be used at the same time. As shown in the figure, an open / close detection sensor (81) is provided on the makeup pallet (71).
When the makeup pallet (71) is pulled out, the sensor (81) detects that the makeup pallet is pulled out, and automatically switches the second display mode without operating the display mode changeover switch (33). Set.

FIG. 9 is a flowchart showing this point. If the power is turned on in step 91, initial processing (port setting, etc.) of the portable terminal is performed in step 92, and then, in step 93, the display mode is set to the first display mode, and the transmission type liquid crystal panel (21) is set. Is turned on, and the scattering type liquid crystal panel (22) is turned off. In step 94, the conventional standby state is set, and the date and time are displayed on the liquid crystal display (1). Then, step 9
In step 5, when the display mode changeover switch (33) is operated to designate the second display mode, the second display mode is set in step 96, the transmission type liquid crystal panel section (21) is turned off, and the scattering type liquid crystal panel is turned off. The unit (22) is turned on, so that the liquid crystal display unit (1) can be used as a compact mirror. On the other hand, if the display mode changeover switch (33) is not operated in step 95, step 97
If it is detected that the makeup pallet (71) has been pulled out, the process proceeds to step 96.

At this time, the display mode switch (3)
When the operation of 3) or the pull-out of the makeup pallet (71) is performed during a call, only the liquid crystal display is switched to the second display mode while the call is being made.

In these cases, the method of pulling out the cosmetic case is not limited to the horizontal direction as shown in FIGS. 7 and 8, nor is it limited to the slide method.
For example, an openable / closable structure may be used.

Although the present embodiment has been described with respect to a mobile phone, the present invention can be easily implemented for any mobile device having a liquid crystal display.

[0039]

As described above, in the portable terminal of the present invention, even when the power is turned off, the liquid crystal display can be effectively used as a compact mirror. Therefore, it is no longer necessary to carry a compact mirror each time.

Further, in the fourth and fifth embodiments in which cosmetics and the like can be stored, by carrying the portable terminal, it is not necessary to carry makeup tools and the like, and the baggage can be made compact. It is now possible to put it together.

[Brief description of the drawings]

FIG. 1 is an external view of a portable terminal according to a second embodiment of the present invention.

FIGS. 2A and 2B are cross-sectional views illustrating a configuration of a liquid crystal display device according to a first embodiment of the present invention, wherein FIG.

FIG. 3 is an explanatory diagram of a driving method of the liquid crystal display device according to the embodiment of the present invention.

FIG. 4 is an algorithm in a portable terminal according to a second embodiment of the present invention;

FIG. 5 is an external view of a portable terminal according to a third embodiment of the present invention.

FIG. 6 is an algorithm in a portable terminal according to a third embodiment of the present invention.

FIG. 7 is an external view of a portable terminal according to a fourth embodiment of the present invention.

FIG. 8 is an external view of a portable terminal according to a fifth embodiment of the present invention.

FIG. 9 is an algorithm in a portable terminal according to a fifth embodiment of the present invention.

FIG. 10 is a circuit diagram of a conventional portable terminal.

FIG. 11 is an external view of a conventional portable terminal.

FIG. 12 is an explanatory diagram of a driving method of a liquid crystal display device in a conventional portable terminal.

[Explanation of symbols]

 Reference Signs List 1 liquid crystal display panel 2 speaker 3 microphone 4 operation unit 5 antenna 1 power switch 21 transmission type liquid crystal panel unit 22 scattering type liquid crystal panel unit 23 mirror 24 polarizing plate 25 polarizing plate 26 polarizing plate 27 polarizing plate 28 transmission type liquid crystal 29 scattering type liquid crystal REFERENCE SIGNS LIST 30 transmissive liquid crystal switch 31 scattering liquid crystal switch 32 liquid crystal drive unit 33 display mode changeover switch 71 cosmetic case unit 81 sensor 101 duplexer 102 low noise amplifier 103 down converter 104 baseband controller 105 up converter 106 power amplifier

Claims (8)

[Claims] 1. A transmission type liquid crystal panel section, a scattering type liquid crystal panel section, and a mirror. The transmission type liquid crystal panel section is energized by being controlled so that only one of the liquid crystal panels is energized. In this case, information is displayed by reflecting light from the outside on the surface of the scattering type liquid crystal panel.If the scattering type liquid crystal panel is energized, light from the outside passes through both liquid crystal panels. A display device which can be used as a mirror by reaching a mirror. 2. A transmission type liquid crystal panel section comprising a transmission type liquid crystal panel section, a scattering type liquid crystal panel section, and a mirror, and is controlled so that only one of the liquid crystal panels is energized, so that the transmission type liquid crystal panel section is energized. In this case, information is displayed by reflecting light from the outside on the surface of the scattering type liquid crystal panel.If the scattering type liquid crystal panel is energized, light from the outside passes through both liquid crystal panels. A portable terminal having a display device which can be used as a mirror by reaching a mirror. 3. A power supply switch, wherein when the power supply switch is turned on, the transmission type liquid crystal panel is energized and the scattering type liquid crystal panel is electrically disconnected at the same time. The mobile terminal according to claim 2, wherein information can be displayed. 4. When the power switch is turned off, the transmission type liquid crystal panel is electrically disconnected and the scattering type liquid crystal panel is energized at the same time. The mobile terminal according to claim 2, wherein the mobile terminal can be used as a mirror. 5. When the power switch is turned on, the transmission type liquid crystal panel portion is energized and the scattering type liquid crystal panel portion is electrically disconnected at the same time. Information can be displayed, and when the power switch is turned off, the transmission type liquid crystal panel is electrically disconnected and at the same time the scattering type liquid crystal panel is energized, so that the display device can be used as a mirror. The mobile terminal according to claim 2, wherein: 6. A display mode changeover switch, wherein the display mode changeover switch switches between a first display mode in which the display device displays information and a second display mode in which the display device functions as a mirror. In one display mode,
The transmission type liquid crystal panel is energized, the scattering type liquid crystal panel is electrically interrupted, and in the second display mode, the scattering type liquid crystal panel is energized and the transmission type liquid crystal panel is electrically interrupted. The mobile terminal according to claim 2, wherein 7. The mobile phone according to claim 2, further comprising a case portion capable of storing cosmetics, wherein the case portion is slidably pulled out or attached to a housing so as to be openable and closable. Terminal. 8. A case for accommodating cosmetics, the case being slidably pulled out or attached to a housing so as to be openable and closable, and attached to the case or the housing, or both. A sensor for detecting opening and closing and taking out of the case portion; when the sensor detects that the case portion has been opened or pulled out, the display mode changeover switch operates to set the display mode to the second display mode; The mobile terminal according to claim 6, wherein the mobile terminal is used.